This map illustrates satellite-detected shelters and other buildings at the Al Zaatari refugee camp in Mafraq Governorate, Jordan. As of 21 May 2013 a total of 28,848 shelters were detected as well as 1,638 infrastructure and support buildings within the 530.95 hectares of the camp. Between 4 May 2013 and 21 May 2013, a total of 3,204 shelters closed or were moved, and a total of 3,750 shelters were constructed, and the number of shelters has thus increased by about 605 since the previous UNITAR/UNOSAT assessment. This indicates an approximate 2% increase in the number of shelters between 4 May and 21 May 2013. In addition areas of expansion are also visible in the image as of 21 May 2013, indicating preparations are underway to accommodate increased numbers of refugees in the near future. This is a preliminary analysis and has not yet been validated in the field; structure locations subject to a spatial error margin of +/- three meters. Please send ground feedback to UNITAR/UNOSAT.